The World of Warcraft Trading Card Game was released in October of 2006 by Upper Deck Entertainment. They lost the right in March 2010, and now Cryptozoic Entertainment has taken over the Trading Card Game.
Unlike most TCGs, the game has a larger focus on multiplayer, having both raids and battlegrounds. Upperdeck has already released five raid decks featuring Onyxia the black dragon, Ragnaros the Firelord, Magtheridon, the Black Temple, and Naxxramas. Raid decks are meant to be tackled by three to five players.